治疗蛔虫病,应先安蛔止痛,应予药味()
A.甘、辛、咸
B.酸、辛、咸
C.苦、辛、咸
D.酸、苦、咸
E.酸、辛、苦
参考答案:E
一条老年金鱼患上了浮鳔病,这种疾病使它沉到水箱底部浮不起来,它的主人给它穿上用软管制作而成的“救生衣”后,它重获新生,再次正常游泳。如果水箱内水深0. 8 m,金鱼和“救生衣”总质量0.2 kg, 金鱼悬浮在水中,如图所示。请计算:
(1)金鱼和“救生衣”受到的浮力是多少?
(2)水对水箱底部的压强是多少?
The lifesaving signal indicating You are seen - assistance will be given as soon as possible is the().
A.vertical motion of white flags
B.vertical motion of a white light or flare
C.firing of a green star signal
D.None of the above